I been using headlights for years.These are by far the best.Rechargeable 18650 batteries will give you about four hours of super bright light.I just buy extra batteries and carry a couple in my pocket.I use this light for dressing game after dark and it really helps you see what your doing.They are really good if you have to look for blood at night.You can see like daylight.This light has an excellent comfortable headband too. BORUiT 15000 Lumen Headlamp CREE 3x L2 LED Headlight Light Charger 18650 Battery
https://www.ebay.com/itm/BORUiT-15000-Lumen-Headlamp-CREE-3x-L2-LED-Headlight-Light-Charger-18650-Battery/132671431408?_trkparms=aid%3D555018%26algo%3DPL.SIM%26ao%3D1%26asc%3D40719%26meid%3D311f9d6d191d40bbbf6f42a4aac5bf9c%26pid%3D100005%26rk%3D4%26rkt%3D12%26sd%3D131831869779%26itm%3D132671431408%26pmt%3D1%26noa%3D0%26pg%3D2047675&_trksid=p2047675.c100005.m1851

~Molɔ̀ːn Labé Skýla~
As Bob Hagel would say"You should not use a rifle that will kill an animal when everything goes right; you should use one that will do the job when everything goes wrong."Good words of wisdom...............